*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #f5f5f5;
    color: #1a1a1a;
    line-height: 1.6;
}

.certificate {
    max-width: 640px;
    margin: 2rem auto;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.certificate__header {
    text-align: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid #1a1a1a;
}

.certificate__brand-logo {
    max-height: 64px;
    max-width: 200px;
    margin-bottom: 0.75rem;
}

.certificate__header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.certificate__subtitle {
    font-size: 0.875rem;
    color: #666;
    margin-top: 0.25rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.certificate__image {
    text-align: center;
    padding: 1.5rem;
    background: #fafafa;
}

.certificate__product-img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: 4px;
}

.certificate__details {
    padding: 1.5rem 2rem;
}

.certificate__details h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.certificate__details > p {
    color: #555;
    margin-bottom: 1rem;
}

.certificate__specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.certificate__specs div {
    display: flex;
    flex-direction: column;
}

.certificate__specs dt {
    font-size: 0.75rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.certificate__specs dd {
    font-weight: 500;
}

.certificate__section {
    padding: 1rem 2rem;
    border-top: 1px solid #eee;
}

.certificate__section h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #666;
    margin-bottom: 0.5rem;
}

.certificate__section p {
    color: #333;
}

.certificate__footer {
    padding: 1.5rem 2rem;
    border-top: 2px solid #1a1a1a;
    text-align: center;
    background: #fafafa;
}

.certificate__footer p {
    font-size: 0.875rem;
    color: #666;
}

.certificate__id {
    margin-top: 0.5rem;
    font-family: monospace;
    font-size: 0.75rem;
    color: #999;
}

/* ── DPP (Digital Product Passport) section ── */

.dpp {
    --dpp-surface: #ffffff;
    --dpp-surface2: #f3f2ef;
    --dpp-border: rgba(0,0,0,0.1);
    --dpp-border-strong: rgba(0,0,0,0.2);
    --dpp-text: #1a1a18;
    --dpp-text2: #6b6b67;
    --dpp-text3: #9b9b96;
    --dpp-green-bg: #e8f5ee; --dpp-green-txt: #1a5c34;
    --dpp-amber-bg: #fdf3e0; --dpp-amber-txt: #7a4f0a;
    --dpp-red-bg: #fcecea; --dpp-red-txt: #7a1f1f;
    --dpp-blue-bg: #e8f0fb; --dpp-blue-txt: #1a3a7a;
    --dpp-purple-bg: #f0edfb; --dpp-purple-txt: #3d2d8a;
    --dpp-radius: 10px;
    --dpp-radius-sm: 6px;

    padding: 1rem 2rem 1.5rem;
    border-top: 1px solid #eee;
    font-size: 15px;
    line-height: 1.6;
}

.dpp h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #666;
    margin-bottom: 0.75rem;
}

.dpp .dpp-stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 8px;
    margin-bottom: 1rem;
}

.dpp .dpp-stat-card {
    background: var(--dpp-surface);
    border: 1px solid var(--dpp-border);
    border-radius: var(--dpp-radius);
    padding: 10px 12px;
}

.dpp .dpp-stat-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--dpp-text3);
    margin-bottom: 3px;
}

.dpp .dpp-stat-val {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -.02em;
}

.dpp .dpp-stat-unit {
    font-size: 11px;
    font-weight: 400;
    color: var(--dpp-text2);
}

.dpp .dpp-section {
    background: var(--dpp-surface);
    border: 1px solid var(--dpp-border);
    border-radius: var(--dpp-radius);
    margin-bottom: 6px;
    overflow: hidden;
}

.dpp .dpp-section-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    cursor: pointer;
    user-select: none;
    transition: background .1s;
}

.dpp .dpp-section-head:hover {
    background: var(--dpp-surface2);
}

.dpp .dpp-sec-icon {
    font-size: 16px;
    color: var(--dpp-text3);
}

.dpp .dpp-sec-title {
    font-size: 13px;
    font-weight: 600;
    flex: 1;
}

.dpp .dpp-chevron {
    color: var(--dpp-text3);
    font-size: 13px;
    transition: transform .2s;
    display: inline-block;
}

.dpp .dpp-chevron.open {
    transform: rotate(180deg);
}

.dpp .dpp-section-body {
    padding: 0 14px 14px;
    display: none;
}

.dpp .dpp-section-body.open {
    display: block;
}

.dpp .dpp-kv {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
    gap: 2px 12px;
    font-size: 13px;
    margin-top: 8px;
}

.dpp .dpp-kk {
    color: var(--dpp-text2);
    padding: 3px 0;
}

.dpp .dpp-kv-val {
    color: var(--dpp-text);
    padding: 3px 0;
    word-break: break-word;
}

.dpp code {
    font-family: 'SF Mono', 'Fira Mono', monospace;
    font-size: 11px;
    background: var(--dpp-surface2);
    padding: 1px 5px;
    border-radius: 3px;
}

.dpp .dpp-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
}

.dpp .dpp-badge-green  { background: var(--dpp-green-bg); color: var(--dpp-green-txt); }
.dpp .dpp-badge-amber  { background: var(--dpp-amber-bg); color: var(--dpp-amber-txt); }
.dpp .dpp-badge-red    { background: var(--dpp-red-bg); color: var(--dpp-red-txt); }
.dpp .dpp-badge-blue   { background: var(--dpp-blue-bg); color: var(--dpp-blue-txt); }
.dpp .dpp-badge-purple { background: var(--dpp-purple-bg); color: var(--dpp-purple-txt); }
.dpp .dpp-badge-gray   { background: var(--dpp-surface2); color: var(--dpp-text2); border: 1px solid var(--dpp-border); }

.dpp .dpp-chip {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
    margin: 2px 3px 2px 0;
    background: var(--dpp-surface2);
    color: var(--dpp-text2);
    border: 1px solid var(--dpp-border);
}

.dpp .dpp-divider {
    height: 1px;
    background: var(--dpp-border);
    margin: 10px 0;
}

.dpp .dpp-comp-card {
    border: 1px solid var(--dpp-border);
    border-radius: var(--dpp-radius-sm);
    padding: 10px 12px;
    margin-bottom: 8px;
}

.dpp .dpp-comp-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.dpp .dpp-comp-label {
    font-size: 13px;
    font-weight: 600;
    flex: 1;
}

.dpp .dpp-comp-wpct {
    font-size: 11px;
    color: var(--dpp-text2);
}

.dpp .dpp-mat-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    padding: 5px 0;
    border-top: 1px solid var(--dpp-border);
}

.dpp .dpp-mat-type { flex: 1; }
.dpp .dpp-mat-cls  { font-size: 10px; color: var(--dpp-text3); }
.dpp .dpp-mat-pct  { font-size: 13px; font-weight: 600; }

.dpp .dpp-bar-wrap {
    height: 5px;
    background: var(--dpp-surface2);
    border-radius: 3px;
    margin: 2px 0 6px;
    overflow: hidden;
}

.dpp .dpp-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width .4s;
}

.dpp .dpp-bar-nat       { background: #1D9E75; }
.dpp .dpp-bar-semi      { background: #BA7517; }
.dpp .dpp-bar-synth     { background: #D85A30; }
.dpp .dpp-bar-metal     { background: #888780; }
.dpp .dpp-bar-composite { background: #D4537E; }

.dpp .dpp-sub-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    padding: 5px 0;
    border-top: 1px solid var(--dpp-border);
}

.dpp .dpp-sub-row:first-child {
    border-top: none;
}

.dpp .dpp-sub-key {
    flex: 1;
    color: var(--dpp-text2);
}

.dpp .dpp-tier-row {
    display: flex;
    gap: 12px;
    font-size: 13px;
    padding: 8px 0;
    border-top: 1px solid var(--dpp-border);
    align-items: flex-start;
}

.dpp .dpp-tier-dot {
    min-width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    background: var(--dpp-purple-bg);
    color: var(--dpp-purple-txt);
    flex-shrink: 0;
    margin-top: 1px;
}

.dpp .dpp-repair-card {
    border: 1px solid var(--dpp-border);
    border-radius: var(--dpp-radius-sm);
    padding: 10px 12px;
    margin-bottom: 8px;
}

.dpp .dpp-step-num {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--dpp-blue-bg);
    color: var(--dpp-blue-txt);
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.dpp .dpp-cert-card {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 10px 0;
    border-top: 1px solid var(--dpp-border);
}

.dpp .dpp-cert-card:first-child {
    border-top: none;
}

.dpp .dpp-star-filled { color: #EF9F27; }
.dpp .dpp-star-empty  { color: var(--dpp-border-strong); }

.dpp .dpp-muted { color: var(--dpp-text3); }
.dpp .dpp-muted2 { color: var(--dpp-text2); }
.dpp .dpp-bold  { font-weight: 700; }
.dpp .dpp-small { font-size: 11px; }
.dpp .dpp-label-upper {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--dpp-text3);
    margin-bottom: 8px;
}

.dpp .dpp-flex  { display: flex; }
.dpp .dpp-wrap  { flex-wrap: wrap; }
.dpp .dpp-gap4  { gap: 4px; }
.dpp .dpp-gap8  { gap: 8px; }
.dpp .dpp-gap10 { gap: 10px; }
.dpp .dpp-gap12 { gap: 12px; }
.dpp .dpp-gap20 { gap: 20px; }
.dpp .dpp-items-center { align-items: center; }
.dpp .dpp-items-start  { align-items: flex-start; }
.dpp .dpp-flex1 { flex: 1; }
.dpp .dpp-shrink0 { flex-shrink: 0; }
.dpp .dpp-mb4  { margin-bottom: 4px; }
.dpp .dpp-mb6  { margin-bottom: 6px; }
.dpp .dpp-mb8  { margin-bottom: 8px; }
.dpp .dpp-mb10 { margin-bottom: 10px; }
.dpp .dpp-mb12 { margin-bottom: 12px; }
.dpp .dpp-mt4  { margin-top: 4px; }
.dpp .dpp-mt5  { margin-top: 5px; }
.dpp .dpp-my10 { margin: 10px 0; }
.dpp .dpp-my12 { margin: 10px 0 12px; }
.dpp .dpp-py5  { padding: 5px 0; }
.dpp .dpp-py8  { padding: 8px 0; }
.dpp .dpp-py4  { padding: 4px 0; }
.dpp .dpp-py3  { padding: 3px 0; }
.dpp .dpp-border-top { border-top: 1px solid var(--dpp-border); }
.dpp .dpp-fs12 { font-size: 12px; }
.dpp .dpp-fs13 { font-size: 13px; }
.dpp .dpp-fs14 { font-size: 14px; }
.dpp .dpp-fs16 { font-size: 16px; }
.dpp .dpp-fs22 { font-size: 22px; }
.dpp .dpp-fs28 { font-size: 28px; }
.dpp .dpp-fw600 { font-weight: 600; }
.dpp .dpp-fw700 { font-weight: 700; }
.dpp .dpp-min130 { min-width: 130px; }

@media (max-width: 600px) {
    .dpp .dpp-stats-bar { grid-template-columns: repeat(3, 1fr); }
    .dpp .dpp-kv { grid-template-columns: 1fr; }
    .dpp .dpp-kk { padding-bottom: 0; color: var(--dpp-text3); font-size: 11px; }
}

/* Error page */
.certificate--error {
    text-align: center;
    padding: 3rem 2rem;
}

.certificate--error h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.certificate--error p {
    color: #666;
    margin-bottom: 0.5rem;
}